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Inorganic pigment slurry processing method

A technology of inorganic pigments and processing methods, applied in the direction of pigment slurry, etc., can solve the problems of light calcium powder anti-coarseness, crystallization, uneven concentration of the upper and lower layers of the finished product, etc., and achieve the effect of bright color and not easy to crystallize

Inactive Publication Date: 2015-11-25
湖州市云巢染料化工厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing polyvinyl chloride inorganic color paste is mainly composed of inorganic pigments (such as iron oxide yellow), ESO, CIBEFKA-8640 (dispersant), CIBEFKA-8341 (wetting agent), DOTP, light calcium carbonate mixed in a certain proportion Its defects are as follows: 1. Due to the ESO in the formula, the inherent physical defects of the raw material itself will cause crystallization of ESO when the temperature becomes low in winter, which will affect the production, storage and quality assurance of PVC color paste. And the use has many adverse effects; 2. There are fillers in the formula, such as light calcium carbonate, which is calcined from ore and has excellent covering properties
In addition, ESO will crystallize at low temperature, which will cause the light calcium powder to become thicker, and there will be the possibility of DOTP precipitation. The existence of these uncertain factors will lead to darkening of the product color, and the packaging of the finished product. uneven layer density

Method used

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  • Inorganic pigment slurry processing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Include the following steps:

[0051] a. Mixing: Mix 20 parts of epoxy soybean oil, 0.5 part of high-polymerization polyvinyl chloride resin and dispersant, stir for 12 minutes at a speed of 1200 r / min, and then filter with a 200-mesh filter to obtain mixture H;

[0052] b. Step-by-step heating: Add 50 parts of epoxidized soybean oil, 0.5 parts of dioctyl terephthalate and dispersant into the mixing tank, heat to 50°C, and continue for 30 minutes, then pour the mixture H into the mixing tank , stirred at a speed of 1300r / min for 12min, then heated to 120°C, and then stood still for 12h to obtain a mixture R;

[0053]c. Stirring: Add the remaining epoxidized soybean oil, chlorinated normal alkanes, color enhancers, rheology modifiers, dispersants and dispersing aids into the mixture R, stir at a speed of 1800r / min for 5min, and then increase the speed of Adjust to 800r / min, add inorganic pigment and heavy calcium carbonate, then stir at 1600r / min for 15min to obtain pre...

Embodiment 2

[0056] Include the following steps:

[0057] a. Mixing: Mix 20 parts of epoxy soybean oil, 0.5 part of high-polymerization polyvinyl chloride resin and dispersant, stir for 20 minutes at a speed of 1500 r / min, and then filter with a 200-mesh filter to obtain the mixture H;

[0058] b. Step-by-step heating: Add 50 parts of epoxidized soybean oil, 0.5 parts of dioctyl terephthalate and dispersant into the mixing tank, heat to 60°C, and continue for 50 minutes, then pour the mixture H into the mixing tank , stirred at a speed of 1500r / min for 20min, then heated to 130°C, and then stood still for 15h to obtain a mixture R;

[0059] c. Stirring: Add the remaining epoxidized soybean oil, chlorinated normal alkanes, color enhancers, rheology modifiers, dispersants and dispersing aids into the mixture R, stir at a speed of 2000r / min for 10min, and then increase the speed of Adjust to 1000r / min, add inorganic pigment and heavy calcium carbonate, then stir at 2000r / min for 20min to obt...

Embodiment 3

[0062] Include the following steps:

[0063] a. Mixing: mix 20 parts of epoxidized soybean oil, 0.5 parts of high-polymerization polyvinyl chloride resin and dispersant, stir for 15 minutes at a speed of 1200-1500 r / min, and then filter with a 200-mesh filter to obtain the mixture H ;

[0064] b. Step-by-step heating: add 50 parts of epoxidized soybean oil, 0.5 parts of dioctyl terephthalate and dispersant into the mixing tank, heat it to 55°C and continue for 40 minutes, then pour the mixture H into the mixing tank , stirred at a speed of 1400r / min for 125min, then heated to 125°C, and then stood still for 13h to obtain a mixture R;

[0065] c. Stirring: Add the remaining epoxidized soybean oil, chlorinated normal alkanes, color enhancers, rheology modifiers, dispersants and dispersing aids into the mixture R, stir at a speed of 19000r / min for 6min, and then increase the speed of Adjust to 9000r / min, add inorganic pigment and heavy calcium carbonate, then stir at 1800r / min ...

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Abstract

The invention relates to an inorganic pigment slurry processing method. The method comprises the following steps that 20 parts of epoxidized soybean oil, 0.5 part of high-polymeric vinyl chloride resin and 0.5 part of a dispersing agent are mixed evenly, stirring is performed for 12-20 min, and then filtering is performed to obtain a mixture H; 50 parts of epoxidized soybean oil, 0.5 part of dioctyl terephthalate and 0.5 part of a dispersing agent are added into a stirring tank, heating is performed to reach the temperature of 50-60 DEG C, the temperature is kept for 30-50 min, the mixture H is poured into the stirring tank for stirring for 12-20 min, then, heating is performed to reach the temperature of 120-130 DEG C, and standing is performed to obtain a mixture R; remaining components are added into the mixture R, stirring is performed for 5-10 min, then the rotating speed is decreased, inorganic pigment and coarse whiting are added, and then stirring is performed for 15-20 min to obtain a prefabricated material K; the prefabricated material K is ground to reach the grain size of 3-5 micrometers, and polyvinyl chloride inorganic pigment slurry is obtained.

Description

technical field [0001] The invention relates to the technical field of inorganic pigments, more specifically, to a method for treating inorganic pigment color paste. Background technique [0002] Polyvinyl chloride color paste (PVC color paste) is divided into two categories: PVC organic color paste and PVC inorganic color paste, both of which have their own advantages and disadvantages. The main advantages of PVC organic color paste are bright colors and good transparency; the disadvantage is that products with higher physical properties have higher prices, and there is no cost advantage. In addition, similar products produced by different manufacturers have great differences in physical properties in terms of hue, concentration, migration, and weather resistance. The advantage of PVC inorganic color paste is that all series of products have good weather resistance, migration resistance, light resistance, high hiding power, and low price; the disadvantage is that the color...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D17/00C08L91/00C08L27/06C08K13/02C08K3/22C08K3/26C08K5/12C08K5/02
Inventor 邱荣美蒋建平
Owner 湖州市云巢染料化工厂
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